Yvo
abbr. yttrium vanadium oxide 釔釩氧化物
??? 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答應提前一個月交貨，我們就同意開信用證。
It says a storm may come next month.
天氣預報說下個月會有一場暴風雨。
In summer it is often too hot, and in winter it is too cold.
夏天常常太熱，冬天又常常太冷。